Boon Pin
AI Systems Architect & Full-Stack Engineer
I design and build AI-powered systems — ERP, IoT platforms, and digital human solutions.
What I Do
Skills transformed into business outcomes
Not just code — complete systems that solve real problems end-to-end.
Build ERP systems for manufacturing and retail
End-to-end OMS, MES, and WMS platforms that digitise operations from order to fulfilment.
Implement AI (LLM, RAG, Agents) into workflows
Enterprise knowledge systems, autonomous AI agents, and intelligent process automation.
Design IoT systems with real-time telemetry (MQTT)
Sensor networks, edge device pipelines, and live factory floor dashboards.
Develop digital avatar / AI assistant systems
Interactive kiosks with LLM personality, real-time voice, and WebRTC streaming.
Architect scalable backend systems (NestJS, microservices)
Event-driven systems, cloud-native platforms, and queue-based processing pipelines.
Build billing & payment platforms
Recurring subscriptions, usage-based billing, and multi-gateway payment integration.
Core Systems
Systems I've designed and delivered
Each entry is a production system — not a side project.
Manufacturing ERP
ERP / MES / WMSDisconnected order processing, no shopfloor visibility, manual inventory tracking across warehouse and production.
Integrated ERP with order management (OMS), production tracking (MES), and warehouse management (WMS) on a single platform.
80% reduction in manual work. Real-time production and inventory visibility across factory floors.
IoT Manufacturing System
IoT / Real-Time TelemetryNo machine visibility, energy data siloed in PLCs, maintenance was purely reactive and costly.
Real-time telemetry pipeline collecting sensor data via MQTT, aggregated and visualised in live dashboards.
Factory-wide real-time visibility. Enabled predictive maintenance and significantly reduced unplanned downtime.
AI Digital Avatar System
AI / Customer ExperienceHigh cost of human concierge at kiosks. Limited availability. Inconsistent brand experience.
AI avatar with LLM-powered personality, real-time voice via TTS/STT, and low-latency WebRTC streaming.
24/7 AI assistant at kiosks. Reduced staffing costs. Consistent, personalised customer experience.
Billing & Payment Platform
Fintech / SaaSManual invoice generation, no recurring billing engine, fragmented payment gateway management.
Automated billing engine with subscription management, usage-based pricing, and multi-gateway payment support.
Fully automated billing cycle. 10k+ customer accounts. 99.9% payment processing uptime.
Architecture & Thinking
How I design systems
Patterns and principles I apply to build systems that are reliable, scalable, and maintainable.
Modular Monolith vs Microservices
Right-sizing architecture to current scale. Modular monolith for early stage; microservices when team and domain complexity demand it.
Queue-Based Processing
Async, resilient pipelines using BullMQ and Redis. Decouples producers from consumers, handles traffic spikes, and ensures delivery.
Event-Driven Architecture
Decoupled, reactive systems where services communicate through domain events. Enables loose coupling and independent scaling.
Offline-First IoT Design
Systems built to survive connectivity loss. Edge devices buffer data locally and sync reliably when connection restores.
API-First Design
Contract-driven development where APIs are defined before implementation. Enables parallel team work and clear integration boundaries.
Domain-Driven Design
Aligning code structure with business domains. Bounded contexts, aggregates, and ubiquitous language that speaks to stakeholders.
AI Expertise
Real AI capability — not just API calls
Production AI systems that go beyond wrappers. From RAG pipelines to autonomous agents.
Retrieval-Augmented Generation
Enterprise knowledge systems that ground LLM responses in private documents, databases, and internal data — not hallucinations.
AI Agents
Autonomous agents that plan, reason, and execute multi-step workflows with tool use, memory, and dynamic decision-making.
LLM Integration
Production-grade integration with OpenAI, Claude, Gemini, and DeepSeek. Model routing, fallbacks, streaming, and cost control.
Streaming AI
Real-time AI responses delivered via WebSocket and SSE. Low-latency streaming for chat interfaces and voice applications.
Knowledge-Based Assistants
Domain-specific AI assistants trained on business context — customer service, internal operations, and technical support bots.
Tech Stack
Technologies I work with
Backend
Frontend
AI
IoT
Infrastructure
Database
Experience & Impact
16+ years building production systems
Industries Served
Open for the right opportunity
Looking for roles or projects involving AI systems, ERP, or IoT platforms.
Focus Areas
Get In Touch
Let's build your system
Available for AI / ERP / IoT projects. Whether you need a full system build or architecture consulting — let's talk.